The subglottis or subglottic region is the lower portion of the larynx, extending from just beneath the vocal cords down to the top of the trachea.Subglottis definition - MedTerms, 23 December 2013. The structures in the subglottis are involved in the regulation of the temperature of the breath. Narrowing of the subglottis is known as subglottic stenosis and may require a tracheotomy to correct.Subglottic Stenosis in Children, 23 December 2013.
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